BMW 5 Series 1981–1987 car dimensions: 4620 mm long, 1700 mm wide and 1415 mm high. Unladen weight is 1,160 kg. Braked towing is 1,500 kg.
The cabin has a driver-angled dashboard with clear analogue instruments and a check control panel on larger-engined models to monitor fluids and bulbs. An onboard computer was a popular option showing average speed, economy, range and outside temperature. Air conditioning was a rare expensive option, standard only on the M5. Cruise control was a factory option with a dedicated stalk. Seats are supportive with good padding. sports seats and electric adjustment were optional. Lux trims added velour, rear headrests and electric front windows. The interior feels solid and well laid out for long drives, with ample rear space.
Boot space is a useful 460 litres with a flat load floor and neat trim for the era. The spare wheel sits under the floor with a toolkit in the lid. Access is straightforward via the wide opening.
Braked towing capacity reaches 1500 kg on many models with unbraked at 500 kg. payload is typically around 510 kg. Some higher models and diesels add oil coolers. M-Technic suspension appears on M535i and M5 grades for firmer control.
The cabin is driver-focused with an angled centre console, clear instruments and a check control panel that monitors fluids and lights. Front seats have improved padding and longer backrests for better support on long drives. Power-adjustable front seats and heated front seats are available on higher grades. A sliding sunroof, either manual or electric, can be fitted. Green-tinted glass appears on some SE models. The interior feels solidly built with good materials for its time and offers decent space for five.
Fuel tank holds 70 litres on most models.
Service Interval Indicator calculates oil service and inspections from driving style, speed and temperature.
ABS optional early on, standard on 528i from 1986 and all North American models from 1985.
Driver airbag optional from late 1985.
Safety cell with front and rear crumple zones is standard.
Disc brakes front and rear on higher-powered models.
Fuel use varies by engine. Petrol six-cylinder models return roughly 8 to 10 litres per 100 km at steady 120 km/h. The 525e eta version is the most frugal petrol option thanks to its long gearing. Diesel 524td models are economical for the period. Most cars carry a 70-litre tank.
The Service Interval system lights green, yellow then red LEDs to show when oil service or a full inspection is due. Intervals depend on how the car is driven rather than fixed mileage alone. Oil and filter changes plus coolant flushes keep the engines healthy. Valve clearances need checking periodically on most units.
The body uses a reinforced passenger cell and crumple zones at both ends. ABS became available early and was fitted as standard on stronger models later. A driver airbag could be ordered from the mid-1980s. Three-point belts are fitted all round.
Regular care of the Service Interval board prevents battery leaks that damage the cluster. Watch common rust spots on sills, arches and sunroof panels. Keep fluids fresh and the hydraulic or vacuum brake servo in good order for reliable daily use.
Length 4620 mm, Width 1700 mm, Height 1415 mm, Wheelbase 2625 mm (5 Series 1981–1987)
Sources: manufacturer data, auto-data.net and autoevolution.com.